Extension refectory table



Patented Jan. 14, 1930 UNITED STATES PATENT OF FR'EDERIGK,B; WALTER, OF" WABASH, INDIANA, ASSIGNOR TO B.

WAZBASH, INDIANA, A. CCRPORATION OF INDIANA EXTENSION REFECTORY TABLE Application filed October 15, 1928. Serial Nol31a7s1.

The object of my invention is to produce a table, more particularly but not necessarily of the refectory type, wherein the main topforming sections may be automatically are ranged inextension or covering relation with a vertically fixed'intermediate extension leaf. The accompanying drawings illustrate my invention.

Fig. 1f is-a plan of the main frame of the lo top with the ends of" the fixed center leaf 7 broken away to show the floating tracks and the guides which support and guide,

the slides which carry the two main top leaves or tabletop sections;

Fig. 2' is a vertical section, of the table,

Fig. 3 is a plan of the floatingslideunits and ends of'the main top leaves supported thereby;

Fig. 41am under slide units;

Fig. 5' a transversesection of'the floating extension sections with one of'the. floating slide units in elevation; 25:}

floating slide units;

relative to the. main top;

Fig. 8' a View similar to Fig. 7 with the parts in position where the extension section's have been drawn apart; to engage the float-- 351mg tracklread to cause a raisin thereof b g 7 Fig. 9 a view similar to Fig.8 with the.

extension sections elevated and completely extended;

Fig. 10 a view similar to Fig. .9 with the.

extension sections jmoved'inwardly to intimate relationvcoveri'ng the main top; and

Fig. llaview. similarto Fig. 10 with the extension sections-,moved apart to position ready to'lowe'r the fioa-ting track sections to the vertically fixed main top.-

In the drawings '20 indicates a base frame, to be supported by asuitable pedestal or leg structure 'andcarry mg ja fixed central 50 main top 2l'th'e edges of'whi'ch overlie the planof one of the floating Fig. 6 atransversesection of one ofthedrop the extension sections to the plane, of

floating slide units, to be described the; said maln top leaf being suflicientlyelevat'ed from" frame so as: to provide room for the necessary vertical movement of the floating slide units and sliding. reception of the. extension leaves.

At each end' of' frame areztwoj metal" track-and-guide plates 22 and 23.] Tlieupper edge of plate 22 is formed iiit'ofaninclined track24, two horizontal portions 25 and 26 at opposite ends of't'racki24'. and at different levels, and a stop 27. Similarly, is formedrinto an.

' inclined track 28, two horizontal. portions. transversely ofjthejparts shown in Fig. 1;.

the upper edge of" plate 23 may lie between them. Arranged between bars 35, near their ends are two rollers supported, respectively on 36, 36 which are the tracks 25"24-f26 and-29 2830, one roller engaging stop 31 whenv the floating track is in its lowest position andthe other roller engaging stop. 27 when. the floating.

track is in its upper position. Arranged at intermediate pointsbetweenbars 35, 3.5 and between stops'27. and 31, are two rollers 37, 37 sosupported thattheyw are exposed slightly above the upper edges of bars 35. g

The two extension leaves 40 and 41- are slpportedby two slide units each of which comprises a middle bar 42 and two slides 43 and lslidablyassociated, with bar 42in a common manner as indicated in Fig. 6. Top leaf'elO. is attached to slides thereof and top leaf 4:1 is attached to slides 44 at the opposite ends thereof. Slides 43 and 44 carry oppositely arranged-rackbars 4=5and 46which meslrwithageaiy47 jour- WALTER as 001 or pair of plates 22: composed. of a. pair 43 at one end I nailed on bar 42. so that movement of one slide causes opposite movement: ofth e companion' slide. on .its under side bar 42 is medially grooved longitudinally, as indicated'atj 50 to.-receive the upwardlyprojectingp ortionsof plates 22. and 23..

Nanoneend'slide llisprovided, in its face adjacentbar' 42," with a pocket 51 in which is pivoted a pawl 52 having the pinreceiving pockets 53 and 54, pocxet 54 being guarded by the guard finger 55. Secured to the under side of bar 42 is a track plate notched at its ends, as indicated at 61, 61 and of such length as to extend between the adjacent edges of plates 22 and 23, notches 61, 61 receiving the stop portions 27 and 31 of said plates.

Projecting inwardly and horizontally from the middle of each floating track is a pin 65 arranged in the plane of pocket 53 of pawl 52 as the free end of said pawl rides upon the upperface of frame 20.

It will be understood from the foregoing description that the extension structure of the table, comprising the two slide units and the connecting leaves 40 and 41, rests upon the floating tracks and is raised and lowered by said tracks and is held against lateral movement, as a whole, by plates 60 which cannot move longitudinally between plates 22 and 23.

The operation is as follows:

With the parts in the positions shown in Fig. 7 the operator pulls outwardly on one of the extension leaf sections 40 or 41 and the two sections move in opposite directions, during this movement the parts reach the position shown in Fig. 8 where pockets 58 of pawls 52 engage pins 65 and proceed to the position shown in Fig. 9, causing the floating tracks to move upwardly along the inclines and the whole unit comprising the extension leaves is thus raised until the leaves 40 and 41 are above the plane of the main top 21. The extension leaf sections 40 and 41 are then moved inwardly until they contact with one another. At the beginning of this inward movement pawls 52 leave pins 65 and fingers 55 cause the pawls to ride over the pins so as to avoid pockets 54. The floating tracks thus remain stationary in their elevated positions.

On the next outward movement of extension leaves 40, 41 pawls 52 ride upon pins 65 until pockets 54'are reached. Return move-.

ment of leaves 40, 41 will then cause a return movement of the floating tracks and a consequent raising'of the leaves 40 and 41 to the plane ofleaf 21. By the time rollers 36 reach track portions 25 and 29 the free ends of pawls 52 contact the upper face of frame 20 and pins 65 descendfree from pockets 54 and the parts may be brought'to the position shown in Fig. 7.

I claim as my invention:

thereby, a floating top extension structure comprising a pair of oppositely movable extension leaves, inclined tracks interposed between the base frame andfloating'top, a floating track associated with the inclined tracks,an d means connected to one of the movable top leaves for engaging the floating track to shift it on the inclined tracks only during alternate lateral movements of said lea 2. An extension table comprising a verticallyfixed base frame and main top carried thereby, a floating top structure comprising two extension leaves, one movable relative to the other, a slide structure comprising three elements one of which is held against longitudinal movement on the base frame and the other two of which are longitudinally movable thereon and each carry one of the extension leaves, vertically inclined tracks carried by the base, a floating track interposed between said tracks and the firstmentioned element of the slide structure, and

means connected to one of the movable slides for engaging the floating track to shift it on the inclined tracks only during alternate lateral movements of the extension leaves.

3. An extension table comprising a vertically fixed base frame and main top carried thereby, two pairs of vertically inclined tracks carried by said base, two floating slide units each comprising a central bar and. two slides mounted on the central bar, two ex-. tension leaves one attached to one slide of each slide unit and the other attached to the other slide of each slide unit, the central bar of each slide unit being interlocked with a slide units each comprising a central bar and two slides mounted on the central bar, two extension leaves one attached to one slide of each slide unit and the other attachedto the other slide of each slide unit, the central bar of each slide unit being interlocked with a track pairagainst longitudinal movement,a

floating track interposed between each trackv 7 pair and the associated slide unit, and means carried by one of the slides of each unit tov engage the adjacent floating track and shift] it on its inclined tracks only during alternate 1. An extension table comprising a ver-" tically fixed base frame and main top carried" lateral movements of a. movable leaf.

5.'An extension comprising a vertically. fixed base frame and main top carried thereby, a floating top structure comprising an extension leaf, a slide structure supporting said extension leaf, a vertically movable support for said slide structure held against longitudinal movement on the base frame,

' carried by said slidin vertically inclined tracks carried by the base, a floating track interposed between said track and the slide-support, and means connected to the slide structure for engaging the floating track to shift it on the inclined tracks only during alternate movements of the slide structure.

6. An extension table comprising a fixed top-leaf, a slide-structure mounted beneath said leaf and vertically movable and comprising a horizontally sliding element and a support therefor, and an extension leaf element, a floating track arranged beneat said slide-structure and movable vertically, and horizontally, inclined tracks supporting said floating track, and means actuated by the horizontally sliding element engaging said floating track to shift the same horizontally only upon alternate strokes in either direction of the extension-leaf carrying element.

In witness whereof I, FREDERICK B. WALTER, have hereunto set my hand at Wabash, Indiana, this llth day of October,

-' A. D. one thousand nine hundred and twenty-eight.

FREDERICK B. WALTER. 

